JM

Johns Manville

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Johns Manville, a Berkshire Hathaway company, specializes in manufacturing commercial roofing, premium insulation, and engineered products, serving customers globally with integrity and innovation.

Denver, CO

Manufacturing
1,001–5,000 people

About

At Johns Manville, we build on decades of experience to manufacture commercial roofing, premium-quality insulation and a variety of engineered products for our customers. We are proud to be part of Berkshire Hathaway, one of the most respected companies in the world. Our values of People, Passion, Perform and Protect drive the way we work as we strive to deliver positive and powerful JM Experiences to our employees and to our customers. Our company is based in Denver, CO, where you will also find our global research and development facilities. With over 8,000 employees and 44 manufacturing and sales locations across North America and Europe, we serve customers in over 80 countries. Our employees are united across business functions and work globally with other JM employees. We encourage you to explore what JM has to offer employees. It’s not just a job when you join JM; you join a JM family with unquestionable integrity and stability. We are PEOPLE champions! Our PASSION is in going the extra mile! We PERFORM at a superior level! And we PROTECT today to ensure tomorrow. Check out our current positions today, connect with a JM recruiter, follow us on LinkedIn, (@JohnsManville on Twitter and Facebook) and learn why we love working at JM!

Open positions

Shipping / Receiving 1

On-site · Cornwall

Operate forklifts to load, unload, and move materials while following established operating procedures. Perform safety inspections, maintain housekeeping standards, and assist other departments such as production and quality control.

Production / Machine Operator

On-site · Cornwall

Operate production machinery to manufacture roof insulation within a rotating shift environment. Maintain high-end product quality and perform general housekeeping duties to ensure a safe workspace.

HR Manager

On-site · Innisfail

The HR Manager will serve as the dedicated HR leader for multiple Canadian manufacturing locations, partnering with plant leadership to design and execute people strategies aligned with business goals. Key duties include leading talent, culture, employee relations, ensuring compliance with Canadian employment laws, and managing core annual HR processes like compensation and benefits renewals.

Industrial Maintenance Mechanic

On-site · Cornwall

The Maintenance Mechanic plans, schedules, and coordinates maintenance activities including preventive maintenance, predictive maintenance, special projects, and service work across the plant property, utilities, offices, and all production line equipment. Key objectives include driving equipment reliability, strengthening safety performance, enhancing operational efficiency through technical excellence, and building strong cross-departmental communication.